Many women preparing for pregnancy usually use early pregnancy test strips for a urine test to see if it is negative or positive when their menstrual period does not come on time. Under normal circumstances, a positive urine test indicates pregnancy, while a negative result generally indicates non pregnancy. So if the urine test is negative, is it necessarily not pregnant?
Is a negative urine test necessarily not pregnant
Generally speaking, a urine test is a commonly used method to determine if one is pregnant. You can use early pregnancy test strips at home to detect early pregnancy, and hospitals can also use this method for early pregnancy testing. If the result of a urine test is usually negative, it means that there is no pregnancy. But there is a special case where the urine test may also be negative or weakly positive. It's very short when pregnant. The results of urine tests may not be accurate below four weeks. So a negative urine test does not necessarily mean that you are not pregnant, you can test again later.
What are the methods for detecting pregnancy
In addition to using urine tests to determine pregnancy, there are also some methods to diagnose pregnancy:
1. Use B-ultrasound for early pregnancy examination. Most early pregnancy B-ultrasound examinations are abdominal color ultrasound, which is a reliable method that can visually see the situation inside the uterus, such as whether the gestational sac has implanted, whether there is fetal heart or bud, etc. Ectopic pregnancies such as ectopic pregnancy and molar pregnancy can also be ruled out. However, performing a B-ultrasound early pregnancy examination requires holding urine, and if the implantation is late, the gestational sac may not be visible during the first examination.
2. Fasting blood tests for HCG and progesterone. This method is also a relatively accurate means of early pregnancy examination, which can accurately determine whether pregnancy has occurred. Just need to draw venous blood on an empty stomach for testing. Generally speaking, this type of examination should not be done only once, but should be done again every other day to monitor the doubling of blood HCG levels.
